So this is a map of North America I made late last year, based on my own personal timeline (nothing detailed) that I have resumed working on. Any feedback is welcome. And yes, the map is kind of flawed.
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I picked the most notable OTL tribes. Cahokia is named after the revived city. The natives all moved to their land after the war. There was no trail of tears, but they had no sovereign territory. Efv (Efv city) is a Muscogee word for dog.
Looks interesting, though the POD is a bit far-reaching, especially in terms of Scandinavian colonization attempts in North America (for reference, jurisdiction over Greenland appears to have died out early into the fifteenth century, etc.). If you want an interesting twist to things, I would suggest perhaps basing this Scandinavian colony after
Nya Sverige, or perhaps just based in Newfoundland and Labrador (reasonably close enough to realms claimed by Denmark at the time - Greenland). It's possible for this Scandinavia to have a greater colonial energy (especially if the Crown felt they needed to better capitalize on the agricultural trade (specifically cash crops like tobacco, why the real-life
Nya Sverige was settled). Beyond that, the treatment of these Native Americans by the Scandinavian colonies is rather up-in-the-air, seeing as there isn't much history to go off of, but I'd assume it'd be similar enough to an "As long as you don't disrupt our business, you're fine" policy.
Beyond that, the placement of Native Americans is... interesting. Mainly in that a large number of the Native nations are
massively distant from where their homelands are, and the explanation of "No Trail of Tears" makes it even less sensible, if I may be honest. For reference, the Native American nations you bring up here (Choctaw, Seminole, Chickasaw, Muskogee Creek, and the Cherokee) were all located within the South, perhaps as far north as Tennessee, entering Kentucky a bit, at most.
The Seminole in particular are more...
interesting. See, Seminole Natives might not even exist in this timeline, seeing as their existence is a couple centuries following the point of divergence. See, the Seminole were essentially a group of Muskogee Creek people who, fed up with European-backed conflict within Native territories, decided to migrate southward into Georgia and Florida. See, if there's a significant enough change in the power dynamics within North America, it's possible for the existence of that nation to be nulled.
I'm no expert of Native American history, so if anyone is more qualified, please correct me. However, here's a good source as to how the Five "Civilized" Tribes were located in the beginning of the nineteenth century (I'm sure this is also following some southern movement by the nations, but this would be a good reference as to where they'd go even without the Trail of Tears):
Beyond that, I'd recommend changing the "Cahokia Nation" to instead by the Illinois Confederation - which did own a large portion of the land you depicted the Cahokia with.
Of course, there are some things I find a tad bit off with the POD (such as how the French and British were willing to ally in face of Scandinavia and Spain, especially seeing as the POD is within two
decades of the Hundred Years' War, especially since it took arguably until the end of the nineteenth century in real life for the British and French to stop staring icicles into each other), but I've probably rambled on a bit too much at this point.